The Controversies of Exoplanet Research
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Multiple Choice
What is the main controversy surrounding the definition of an exoplanet?
- Whether or not a planet should be considered an exoplanet if it is not orbiting a star.
- Whether or not a planet should be considered an exoplanet if it is not within the habitable zone of its star.
- Whether or not a planet should be considered an exoplanet if it is not massive enough to sustain a rocky surface.
- Whether or not a planet should be considered an exoplanet if it is not tidally locked to its star.